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80494284 = 223133471487
BaseRepresentation
bin1001100110000…
…11111011001100
312121110112101210
410303003323030
5131101304114
611553134420
71665122133
oct463037314
9177415353
1080494284
1141489602
1222b5a410
13138a4370
14a99491a
157100259
hex4cc3ecc

80494284 has 48 divisors (see below), whose sum is σ = 202987008. Its totient is φ = 24679488.

The previous prime is 80494283. The next prime is 80494339. The reversal of 80494284 is 48249408.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (80494283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53389 + ... + 54875.

It is an arithmetic number, because the mean of its divisors is an integer number (4228896).

Almost surely, 280494284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80494284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101493504).

80494284 is an abundant number, since it is smaller than the sum of its proper divisors (122492724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80494284 is a wasteful number, since it uses less digits than its factorization.

80494284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 80494284 is about 8971.8606765821. The cubic root of 80494284 is about 431.7725354305.

The spelling of 80494284 in words is "eighty million, four hundred ninety-four thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 347 694 1041 1388 1487 2082 2974 4164 4461 4511 5948 8922 9022 13533 17844 18044 19331 27066 38662 54132 57993 77324 115986 231972 515989 1031978 1547967 2063956 3095934 6191868 6707857 13415714 20123571 26831428 40247142 80494284